Rotatable knob for an electronic cam lock



FIG. 1 is a front left perspective view of a first embodiment of a rotatable knob for an electronic cam lock according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for a rotatable knob for an electronic cam lock, substantially as shown and described. 